Trong Mai Islet (Fighting Cock Rocks) is situated on the southwest side of HaLong Bay, 5 km from the tourist wharf near Dinh Huong Islet. In a somewhat large expanse of open sea, the island seems to grow up from the bottom of the deep emerald waters. At sunset, the over 10 m high islet turns bright red.and because the tiny rock “legs” support the heavy rocks above, it appears that one strong wave could throw the large stone blocks into the sea. However, hundreds of millions of years have passed, and the Trong Mai is still there. An image of this island is the logo of HaLong Bay and Vietnam Tourism.